THE Kinahan Cartel’s number-one target, Gerry ‘the Monk’ Hutch, casually leaves the key in the front door of his suburban home after flying back home to Dublin.

The Sunday World can reveal how Hutch flew back into Ireland from Madrid on Friday night to be met by Gardaí from Ballymun Garda Station and Airport police.

It is understood that officers served the Monk with a Garda Information Message (GIM) at the airport, officially warning him that his life is in danger from the Kinahan Cartel.

But Gerry – whose taxi-driving brother Eddie was shot dead in his home on Poplar Row three weeks ago in revenge for the Regency Hotel murder of David Byrne – did not appear to be too concerned just hours later.

The Sunday World called to Gerry’s home in the leafy suburb of Clontarf shortly after 10.30am yesterday to speak with him about the ongoing feud.

CCTV cameras erected over the door of Gerry’s house monitored our visit.

Hutch did not come to the door, but our reporter observed that the occupants had left the key sticking out of the lock of the door either by mistake or because he has no fear of his rivals.

Gerry’s return to Ireland came just hours after Gardaí were informed that Daniel Kinahan had also returned to Dublin.

He also arrived back in the country through Dublin airport, just hours before Hutch returned.

The arrival of the heads of both feuding families back in Ireland is expected to lead to a significant escalation in tensions.

Yesterday afternoon, the Sunday World watched as Gardaí again renewed marked and unmarked patrols around Gerry’s home.

Earlier this week, cartel boss Daniel Kinahan returned to the boxing promotion business for the first time since the shocking Regency Hotel attack.

He was photographed in London where boxers from his MGM stable were fighting last night, but within hours of posting the picture he flew back into Ireland.

Daniel had flown out to London after his pal David Byrne’s funeral and was keeping a low profile. However, he popped up on Wednesday for the ‘Crunch Time’ event which took place in York Hall. It was not an MGM event, but did feature some of their boxers.

Daniel Kinahan

Kinahan posed for a picture with MGM boxer Adam ‘Shrek’ Hart, who was previously on the U.K.’s most-wanted list.

Hart, from Purfleet in Essex, went on the run in 2007 after police in the U.K. raided his workplace to question him over a conspiracy to supply £400,000 worth of cocaine.

He was placed on the U.K.’s most wanted list and resurfaced in Holland in 2009, where he was arrested by the Amsterdam Quick Response Unit.

Hart was found with a large sum of cash and allegedly tried to eat his SIM card when he was arrested.

He was carrying three mobile phones and had a fake passport on his person.

Hart was a former British kickboxing champion, but became a professional boxer in 2014.

Irish professional boxing was left in disarray following the Regency shooting and there are currently no MGM events planned here for the foreseeable future.

MGM boxer Anthony Fitzgerald, a friend of the Hutch family, retired from boxing in the wake of the murder.

However, MGM is also making inroads in the U.K. boxing scene and have refused to cancel any of the scheduled events there.

The presence of Kinahan in London ahead of the fight shows he is not giving up on his involvement with MGM.

Gardaí have currently stepped up their probe into a number of companies which have been identified as having links to the Kinahan Cartel

As well as a number of city centre pubs, it is understood that other businesses include a recreational facility in west Dublin, hairdressers, beauty salons, transport and meat companies.

However, the main focus at the moment is LS Active Car Sales – the company which was set up by Liam Byrne and his pal Sean McGovern three years ago.

The high-end car sales company never filed any company accounts and has been struck off.

It is understood that Gardaí and customs officers are now tracking cars imported by LS Active Car Sales and which have redistributed to a number of garages in Dublin.